1;
/define body mru value
/ 0      low level body structs are loaded/unload on instance level. body is always freed LeaveSector()
/ 1..14  low level body structs are only unloaded when body is freed. body is freed at the <value> LeaveSector()
/ 15	 low level body structs and body are only freed if story is unloaded.
/bodyid;mruvalue;
